Open "My Computer" on the desktop, enter the system disk (note: the system disk is installed on the C disk by default), and find the file "c:\windows\SchedLgU.txt", which records the time from the creation to the work of the computer (note: if the computer has been reinstalled, it will be recorded from the date of reinstallation).

2. Check the recent program records of the computer.

Open the file "My Computer" on the desktop-"C: \ Windows \ Prefetch (folder)". In this folder, the programs that the computer has run are recorded. The file name in front of each file (that is, the decimal point in front of the file) is the name of the program that the computer has run, and there is still time. Don't worry about the execution code behind, if the computer is not optimized, the things saved here should be very valuable!

3. Check the files (non-program classes) and folder records recently opened by the computer.

Click Start-Run-Recent in the lower left corner of the desktop to view it.